Observation Rock on Ptarmigan Ridge, northwest slope of Mt. Rainier, n.d

Chicago citation style
Watson, Dwight. Observation Rock on Ptarmigan Ridge, northwest slope of Mt. Rainier, n.d. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/watson/id/15. (Accessed June 20, 2018.)
APA citation style
Watson, Dwight, Observation Rock on Ptarmigan Ridge, northwest slope of Mt. Rainier, n.d. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/watson/id/15
MLA citation style
Watson, Dwight. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/watson/id/15>.
Note: These citations are programmatically generated and may be incomplete.